Water Pressure - Thermal Expansion??
Posted by dave brown on April 01, 2004 at 10:15:46:
I recently had to replace my gas hot water heater. I raised the temperature of the new hot water heater to get more hot water fro a longer period of time. Water then began coming from the pressure relief valve into a pan on the floor. I never had any problems with my old water heater.
I had the man who installed the water heater check it. He claims that I have 90 pounds of water pressure coming into the house. I have had no clanging pipes, leaking faucets, or running toilets which I have been told are symptoms of too high water pressure. He said because the hot water heater is a closed loop system, I now need a thermal expansion tank and the new water pressure adapter. It seems strange that I can replace a 20 year old unit and end up with a system that is worse and more costly than what I had before. What's the story here?

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